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汽车安全与节能学报

汽车安全与节能学报 ›› 2011, Vol. 2 ›› Issue (3): 217-222.DOI: 10.3969/j.issn.1674-8484.2011.03.006

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微波等离子体用于汽车点火的仿真及研究

霍娜，张贵新*，张锋，刘永喜，张庆   

  1. 清华大学 气体放电与等离子体实验室， 北京100084
  • 收稿日期:2010-09-20 出版日期:2011-09-27 发布日期:2011-10-13
  • 通讯作者: *通讯作者/ Corresponding author： 张贵新，研究员。E-mail: guixin@mail.tsinghua.edu.cn
  • 作者简介:第一作者/ First author： 霍娜（1985—），女（汉），河北，硕士研究生。E-mail: huonhuon@163.com
  • 基金资助:

    国家开放基金资助项目（KF10051）；清华大学汽车安全与节能实验室与气体放电与等离子体实验室合作项目（Z01）

Simulation and experimental investigation of auto ignition using microwave plasma

HUO Na, ZHANG Guixin*, ZHANG Feng, LIU Yongxi, Zhang Qing   

  1. Laboratory of Gas discharge and Plasma, Tsinghua University, Beijing 100084, China
  • Received:2010-09-20 Online:2011-09-27 Published:2011-10-13
  • Contact: *通讯作者/ Corresponding author： 张贵新，研究员。E-mail: guixin@mail.tsinghua.edu.cn
  • About author:第一作者/ First author： 霍娜（1985—），女（汉），河北，硕士研究生。E-mail: huonhuon@163.com
  • Supported by:

     国家开放基金资助项目（KF10051）；清华大学汽车安全与节能实验室与气体放电与等离子体实验室合作项目（Z01）

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摘要：  用仿真及实验，论证了微波等离子体用于汽车点火的可行性。用三维微波电磁场仿真软件CST完成仿真设计。仿真模拟表明：当气缸内活塞到达上止点时，形成谐振，电场最强，迅速点火；偏离上止点时，电场迅速衰减，点火熄灭。改变直线波导上气缸的分布，模仿现有四缸汽车每组间隔点火情况。网络分析仪测试表明：活塞只有在某一特定刻度时，微波传输率才最大。实物试验中，微波源通过微波传输系统向带有一个气缸的直线波导馈入微波，只有在某一刻度范围内，气缸内产生很强的电场，激发出等离子体，气缸内点火。

关键词:  汽车节能, 汽车点火, 微波等离子体, 电场, 谐振

Abstract: The feasibility of microwave plasma employed in auto ignition was demonstrated by simulation design and experiments. The simulation design was implemented using the software of "computer simulation technology" (CST) for a 3-D microwave electromagnetic field. The simulation design shows that when the cylinder piston gets to the top dead centre (TDC), the electric field in the cylinder is stronger than elsewhere and the ignition is generated, with the electric field weakening and the ignition quickly snuffing out with fast TDC deviation. Based on linear distribution of the cylinder, the simulation design imitates the situation of existing four cylinder ignition. The network analyzer tests show that the microwave transfer rate is the largest only in a certain scale with the piston alternating position. The microwave source transfers energy to the linear waveguide with a cylinder through the microwave transmission system. Only in a certain scale range, the electric field in the cylinder is strong enough to generate plasma with auto ignition then produced in the cylinder.

Key words: vehicle energy saving, auto ignition, microwave plasma, electric field, resonance

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